Magnetisches Sensorelement und Vorrichtung mit Verbesserter Genauigkeit unter Hohen Magnetfeldern

Details

Veröffentlichungs-Nr.

EP3913386

Aktenzeichen

EP20315252

Anmeldetag

20. Mai 2020

Veröffentlichung

11. Februar 2026

Erteilung

11. Februar 2026

Rechtsraum

EP

IPC

G01R33/09G01R33/00

Abstract

Magnetic angular sensor element (20) destined to sense an external magnetic field (60), comprising a magnetic tunnel junction (2) containing a ferromagnetic pinned layer (21) having a pinned magnetization (210), a ferromagnetic sensing layer (23), and a tunnel magnetoresistance barrier layer (22); the ferromagnetic sensing layer (23) comprising a first sensing layer (23a) being in direct contact with the barrier layer (22) and having a first sensing magnetization (230a), a second sensing layer (23b) having a second sense magnetization (230b), and a metallic spacer (24) between the first sensing layer (23a) and the second sensing layer (23b); wherein the metallic spacer (24) is configured to provide an antiferromagnetic coupling between the first sensing magnetization (230a) and the second sensing magnetization (230b) such that the first sensing magnetization (230a) is oriented substantially antiparallel to the second sensing magnetization (230b); the second sensing magnetization (230b) being larger than the first sensing magnetization (230a), such that the second sensing magnetization (230b) is oriented in accordance with the direction of the external magnetic field (60).

Anmelder

Firmen

Allegro MicroSystems, LLC
Crocus Technology SA
Crocus Technology S.A.

Land

🇺🇸 USA

Fachgebiete